Three social network models(Whole network,Partial network,and Ego network) are related to the three levels of competitor analysis(Macro competitive environment analysis,Meso competitor Alliance analysis,and Micro competitor individual analysis).Indicators of social network analysis are matched with specific tasks of competitor analysis.The framework and workflow of competitor analysis based on social network analysis is built to meet the needs of practice staff.The use of the method is showed by empirical competitor analysis of the listed company,Huatai Securities.